Winsor & Newton Artists' 300 GSM Water Colour Cold Press Paper Sheet, 22 by 30-Inch 140lb/300gsm, 22-by-30 inch loose sheet paper that can be stretched to avoid buckling when wet and dries quickly Made on a cylinder mold from 100% cotton Extremely strong and stable paper and is guaranteed 100% acid-free for archival permanence Cold pressed paper having a moderate texture to hold in water and pigment and is generally considered the easiest to use